The first step: Open the Excel table, click the first row, the third "cell", that is, C1, in the C1 input "=A1-B1";
Step two: This formula means: A1-B1=C1, the number in the first cell "minus" the number in the second cell is equal to the third cell. You may wish to try, enter the number of poor requirements;
As shown in the figure, I entered 50 in the A1, entered 60 in the B1, and the result came directly to the answer in C1:-10.
Of course, we can also in the second row, the third row, four rows, and so on, the cell input more requirements for the difference in numbers, to get more results, such as figure;
At this point, there is still less than a step to seek a difference. We first click the mouse to select C1 cell, and then when the mouse into a black cross, hold down the left mouse button, drag down;
After dragging, release the mouse you can see all the results will be displayed.
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